Rescue ring buoy



FIG. 1 is a front perspective view of a rescue ring buoy, showing our new design;

FIG. 2 is a front elevation view thereof, the rear elevation view, the left elevation view, and the right elevation view being mirror images thereof;

FIG. 3 is a top plan view thereof, the bottom plan view being a mirror image thereof; and,

FIG. 4 is a partial section view thereof, taken along line 4-4 in FIG. 2.

The broken lines depicts portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a rescue ring buoy, as shown and described. 